{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T17:26:58Z","timestamp":1783013218407,"version":"3.54.6"},"reference-count":16,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T00:00:00Z","timestamp":1776211200000},"content-version":"vor","delay-in-days":14,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T00:00:00Z","timestamp":1775001600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["aapm.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Applied Clin Med Phys"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>This study aimed to commission the AlignRT inBore system in Ethos\/Halcyon linear accelerator (Linac) systems for surface\u2010guided radiotherapy (SGRT), including developing a soft collision quality assurance (QA) to pass daily AlignRT QA without daily calibration, ensuring compatibility between SGRT and image\u2010guided radiotherapy (IGRT) setups, establishing a baseline performance in AlignRT motion monitoring, and enabling breast DIBH SGRT using manual beam gating with timing accuracy assessment.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>The AlignRT inBore system contains three ceiling\u2010mounted camera pods for SGRT setup at the simulation isocenter (sim\u2010ISO), and two ring\u2010mounted camera sets on the spring\u2010supported bore cover for motion monitoring at treatment ISO (txt\u2010ISO), after iterative cone\u2010beam computed tomography (iCBCT) setup. The commissioning includes confirming the ring cameras are outside the radiation fields, verifying IEC coordinate consistency between SGRT and IGRT, and ensuring the compatibility of AlignRT daily QA with collision QA. A dot\u2010array plate was used for SGRT calibration and daily QA at both ISO positions. A soft collision check method was developed to minimize the bore\u2010cover displacement by (1) triggering the collision alarm from the rear side, distant from the front ring cameras, and (2) reproducing the rear bore\u2010cover position by marking before the collision check. Clinical staff were trained for the new daily QA procedure, and the average period between calibrations was calculated over the past 12 months. Additionally, the application\u2010specific breast DIBH SGRT procedure was commissioned through an end\u2010to\u2010end test with manual gating, which was retrospectively evaluated for timing accuracy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The AlignRT inBore camera ring was moved 2\u00a0cm away from the iCBCT field toward the bore front, and the IEC 61217 coordinate system yields consistent SGRT and IGRT setups. AlignRT inBore daily QA can pass using the soft collision procedure without daily calibration, with an average calibration period of 2\u00a0weeks, as ad\u2010hoc calibrations are required after open\u2010bore services. The manual gating accuracy is found to be 0.6s\u00a0\u00b1\u00a00.2s, which can be further reduced if the beam can be proactively turned off before coaching patients to relax from a DIBH.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The commissioning of the AlignRT inBore systems was successfully implemented, including developing and implementing the soft collision QA without daily calibration for 2\u00a0weeks, updating inBore camera position (2\u00a0cm to the bore front), ensuring SGRT\u2010IGRT couch\u2010shift consistency, establishing a baseline performance (&lt;\u00a00.2\u00a0mm drift), and allowing SGRT applications on Ethos\/Halcyon systems. The application\u2010specific breast DIBH SGRT procedure with manual beam gating is also commissioned with a new retrospective timing analysis for assessing gating accuracy (0.6s\u00a0\u00b1\u00a00.2s).<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/acm2.70586","type":"journal-article","created":{"date-parts":[[2026,4,16]],"date-time":"2026-04-16T04:52:19Z","timestamp":1776315139000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Daily quality assurance, system and procedure\u2010specific commissioning of a bore\u2010based optical surface imaging system for surface\u2010guided radiotherapy (SGRT)"],"prefix":"10.1002","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9022-2883","authenticated-orcid":false,"given":"Guang","family":"Li","sequence":"first","affiliation":[{"name":"Department of Medical Physics Memorial Sloan Kettering Cancer Center  New York City New York 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